swing实现系统托盘

在jdk1.6里，swing方面的改动非常大，其中有个改动就是加入了java自己的托盘实现，终于不用去引用第三方的jar来做了。一个简单的demo:

public class TrayIconTest extends JFrame {
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private TrayIcon ti;

    public static void main(String[] args) {
    	TrayIconTest frame = new TrayIconTest();
        frame.setTitle("TrayIconTest");
        frame.setVisible(true);
        frame.setSize(200, 65);
        frame.setLocation(300, 200);
    }

    public TrayIconTest() {
        setDefaultCloseOperation(WindowConstants.HIDE_ON_CLOSE);
        this.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                if (SystemTray.isSupported()) {
                    setVisible(false);
                    minimizeToTray();
                } else {
                    System.exit(0);
                }
            }
        });
        JPanel root = new JPanel();
        JButton exitButton = new JButton("Exit");
        exitButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        });
        root.add(exitButton);
        getContentPane().add(root);
        pack();
        initTi();
    }

    private void initTi() {
    	URL url = this.getClass().getResource("/logo.gif");
        Image image = Toolkit.getDefaultToolkit().getImage(url);
        PopupMenu popupTi = new PopupMenu();
        MenuItem showItem = new MenuItem("Show");
        ActionListener showListener = new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                setVisible(true);
                SystemTray.getSystemTray().remove(ti);
            }
        };
        showItem.addActionListener(showListener);
        popupTi.add(showItem);
        ti = new TrayIcon(image, "TrayIcon", popupTi);
        ti.addActionListener(showListener);
    }

    public void minimizeToTray() {
        SystemTray tray = SystemTray.getSystemTray();
        try {
            tray.add(ti);
        } catch (AWTException e) {
            e.printStackTrace();
        }
    }

}

有了这个，可以把trayicon这个东西给拿掉了，对第三方包的引用又能减少一个了。